{"product_id":"liqui-moly-hydraulic-lifter-additive-2-pack-cleans-deposits-reduces-valvetrain-noise","title":"Liqui Moly Hydraulic Lifter Additive 2-Pack — Cleans Deposits, Reduces Valvetrain Noise","description":"\u003cp\u003e\u003cstrong\u003eLiqui Moly 20004 Hydraulic Lifter Additive (2 pack) is a concentrated formula designed to clean, protect, and reduce noise from hydraulic lifters and valvetrain components.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUsed as an oil treatment, this Liqui Moly additive targets deposits and sticking points inside hydraulic lifters, helping restore smoother valve action and quieter operation without removing or disassembling engine parts. Compatible with many gasoline and diesel engines that use hydraulic lifters, the product is supplied as two bottles to treat multiple service intervals or more than one vehicle.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this additive improve hydraulic lifter behavior?\u003c\/h3\u003e\n\u003cp\u003eThe formula loosens varnish, sludge and residues that can cause lifters to stick or tick. By cleaning internal passages and restoring proper oil film, lifters can respond more consistently and quietly under varied engine conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBreaks down deposits that restrict lifter movement\u003c\/li\u003e\n  \u003cli\u003eRestores oil flow through lifter galleries and check valves\u003c\/li\u003e\n  \u003cli\u003eHelps reduce audible valvetrain ticking and irregular lifter travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen and how should I use the Liqui Moly 20004 additive?\u003c\/h3\u003e\n\u003cp\u003eAdd the recommended amount to the engine oil during an oil change or before a drive cycle that will warm the engine thoroughly. Follow bottle directions for dosage and allow time and normal engine operation for the cleaning agents to reach lifters and passages.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse during oil service or before extended highway driving for best circulation\u003c\/li\u003e\n  \u003cli\u003eOne bottle treats a specific oil volume—use both bottles for larger engines or multiple services\u003c\/li\u003e\n  \u003cli\u003eNot a substitute for mechanical repair if lifters are worn or hydraulically failed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs it safe for my engine and oil system?\u003c\/h3\u003e\n\u003cp\u003eLiqui Moly formulates this additive to be compatible with standard engine oils and common sealing materials when used as directed. It cleans and conditions without altering the base oil’s primary properties, but always check compatibility with your vehicle manufacturer’s service recommendations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with conventional and synthetic oils when dosed correctly\u003c\/li\u003e\n  \u003cli\u003eDoes not require part disassembly to act on lifters and galleries\u003c\/li\u003e\n  \u003cli\u003eFollow OEM guidelines—avoid use where manufacturer prohibits additives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat improvements can I expect to notice after use?\u003c\/h3\u003e\n\u003cp\u003eResults vary by engine condition; many users report reduced lifter noise, smoother idle, and improved responsiveness once deposits are reduced. Benefits appear as the product circulates and cleans lifter passages during normal operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuieter valvetrain and diminished ticking noises\u003c\/li\u003e\n  \u003cli\u003eSmoother idle and more consistent valve timing response\u003c\/li\u003e\n  \u003cli\u003ePotential for extended service intervals if maintenance is followed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Liqui Moly 20004 Hydraulic Lifter Additive (2 pack) is aimed at car owners, mechanics, and fleet operators who want a non-invasive way to address noisy or sticking hydraulic lifters and to clean valvetrain oil passages. It is appropriate for vehicles that specify use of oil additives and for anyone seeking preventive maintenance or an interim remedy before pursuing further mechanical diagnosis. If your engine exhibits mechanical failure or severe wear, consult a technician—this additive is intended as a cleaning and conditioning treatment, not a guaranteed repair.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I add Liqui Moly 20004 to any engine oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes for most conventional and synthetic oils when used as directed, but always check your vehicle manufacturer’s guidance before adding additives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How soon will I hear less lifter noise?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Many users notice reduced ticking after a few heat cycles; full effect can take driving time for the additive to circulate and clean passages.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Liqui Moly","offers":[{"title":"Default Title","offer_id":55166616568151,"sku":"B0725BXPCV","price":37.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/liqui-moly-20004-front-bottle.jpg?v=1790369169","url":"https:\/\/britishgarage.co.uk\/products\/liqui-moly-hydraulic-lifter-additive-2-pack-cleans-deposits-reduces-valvetrain-noise","provider":"British Garage","version":"1.0","type":"link"}